RFR: 8239423: [TESTBUG] jdk/jfr/jvm/TestJFRIntrinsic.java failed with -XX:-TieredCompilation

[Ao Qi]

On Wed, Feb 19, 2020 at 3:01 PM David Holmes <david.holmes at oracle.com> wrote:
>
> Hi,
>
> On 19/02/2020 4:20 pm, Ao Qi wrote:
> > Hi all,
> >
> > Could you please review this patch?
> >
> > JBS: https://bugs.openjdk.java.net/browse/JDK-8239423
> > webrev: http://cr.openjdk.java.net/~aoqi/8239423/webrev.00/ (22 lines
> > changed: 19 ins; 0 del; 3 mod; 153 unchg)
>
> I'm not seeing the connection between the reported bug and the fix. It
> seems to me that passing -XX:-TieredCompilation to a test that
> explicitly sets -XX:TieredStopAtLevel=n is simply not something that can
> work. In fact I'm surprised it doesn't trigger an error when validating
> the command-line args.

"-XX:-TieredCompilation" in the title is a way to trigger the bug, not
the cause. Sorry for the confusion. The bug also can be triggered by
the jdk configured with --with-jvm-features=-compiler1.

>
> You fix seems more related to whether C1 and/or C2 are available.

Yes.

Cheers,
Ao Qi

>
> ??
>
> Cheers,
> David
>
> > Thanks,
> > Ao Qi
> >